Fix redirects

When we introduced netlify.toml, netlify stopped reading from
_redirects.  This restores that functionality.

netlify.toml

@@ -2,3 +2,55 @@
     base = "docs/book"
     command = "./install-and-build.sh"
     publish = "docs/book/book"
+
+
+# Standard Netlify redirects
+[[redirects]]
+    from = "https://kubebuilder.netlify.com/*"
+    to = "https://book.kubebuilder.io/:splat"
+    status = 301
+    force = true
+
+# HTTP-to-HTTPS rules
+[[redirects]]
+    from = "http://go.kubebuilder.io/*"
+    to = "https://go.kubebuilder.io/:splat"
+    status = 301
+    force = true
+
+[[redirects]]
+    from = "http://kubebuilder.netlify.com/*"
+    to = "http://book.kubebuilder.io/:splat"
+    status = 301
+    force = true
+
+# Go Links
+[[redirects]]
+    from = "https://go.kubebuilder.io/dl/*"
+    to = "https://go.kubebuilder.io/releases/:splat"
+    status = 301
+    force = true
+
+[[redirects]]
+    from = "https://go.kubebuilder.io/releases"
+    to = "https://github.com/kubernetes-sigs/kubebuilder/releases"
+    status = 302
+    force = true
+
+[[redirects]]
+    from = "https://go.kubebuilder.io/releases/:version"
+    to = "https://github.com/kubernetes-sigs/kubebuilder/releases/v:version"
+    status = 302
+    force = true
+
+[[redirects]]
+    from = "https://go.kubebuilder.io/releases/:version/:os"
+    to = "https://go.kubebuilder.io/releases/:version/:os/amd64"
+    status = 302
+    force = true
+
+[[redirects]]
+    from = "https://go.kubebuilder.io/releases/:version/:os/:arch"
+    to = "https://github.com/kubernetes-sigs/kubebuilder/releases/download/v:version/kubebuilder_:version_:os_:arch.tar.gz"
+    status = 302
+    force = true